{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-17T08:15:43.594","vulnerabilities":[{"cve":{"id":"CVE-2021-21374","sourceIdentifier":"security-advisories@github.com","published":"2021-03-26T22:15:12.867","lastModified":"2024-11-21T05:48:13.487","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Nimble is a package manager for the Nim programming language. In Nim release versions before versions 1.2.10 and 1.4.4, \"nimble refresh\" fetches a list of Nimble packages over HTTPS without full verification of the SSL/TLS certificate due to the default setting of httpClient. An attacker able to perform MitM can deliver a modified package list containing malicious software packages. If the packages are installed and used the attack escalates to untrusted code execution."},{"lang":"es","value":"Nimble es un administrador de paquetes para el lenguaje de programación Nim. En las versiones de lanzamiento de Nim anteriores a 1.2.10 y 1.4.4, \"nimble refresh\" extrae una lista de paquetes de Nimble por medio de HTTPS sin una comprobación completa del certificado SSL/TLS debido a la configuración predeterminada de httpClient. Un atacante capaz de ejecutar un MitM puede entregar una lista de paquetes modificada que contenga paquetes de software malicioso. Si los paquetes son instalados y usados, el ataque se convierte en una ejecución de código que no es confiable."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"HIGH","availabilityImpact":"LOW"},"exploitabilityScore":2.2,"impactScore":5.3},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","baseScore":6.8,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-348"},{"lang":"en","value":"CWE-349"},{"lang":"en","value":"CWE-599"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-295"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nim-lang:nim:*:*:*:*:*:*:*:*","versionEndExcluding":"1.2.10","matchCriteriaId":"895C273A-28A1-4592-8A50-9A8FAAD7D98C"},{"vulnerable":true,"criteria":"cpe:2.3:a:nim-lang:nim:*:*:*:*:*:*:*:*","versionStartIncluding":"1.4.0","versionEndExcluding":"1.4.4","matchCriteriaId":"FBDDF104-9FC9-4CED-9F87-26CF1DA2EF4E"}]}]}],"references":[{"url":"https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/","source":"security-advisories@github.com","tags":["Exploit","Third Party Advisory"]},{"url":"https://github.com/nim-lang/Nim/pull/16940","source":"security-advisories@github.com","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130","source":"security-advisories@github.com","tags":["Release Notes","Third Party Advisory"]},{"url":"https://github.com/nim-lang/security/security/advisories/GHSA-c2wm-v66h-xhxx","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"]},{"url":"https://github.com/nim-lang/Nim/pull/16940","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Release Notes","Third Party Advisory"]},{"url":"https://github.com/nim-lang/security/security/advisories/GHSA-c2wm-v66h-xhxx","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}]}